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Air undergoes a polytrophic process in a piston cylinder assembly from p1=1 atm, T1=70 degrees F to p2=5 atm. Employing the ideal gas model with constant specific heats at 80 degrees F, determine the work and heat transfer per unit mass, in btu/lbm, if
a) n= 1.3
b) n= the specific heat ratio, k
the train car has a mass of 10 mg and is traveling at 5 ms when it reaches a. if the rolling resistance is 1100 of the
refrigerant-22 is condensed from 120degc 1.40 mpa to saturated liquid using air at 24degc 1.00 bar. the air absorbs
Tall buildings can develop a significant difference in pressure between the inside and the outside of the building. Air lock entrances are used at the ground level so the pressure at the ground floor is not the same as atmospheric pressure. Assume th..
a cylindrical drill with radius r1 is used to bore vertically a hole through the centre of a sphere of radius r2.a find
a piston-cylinder device contains v1 volume of air at p1 pressure and t1 temperature. the air is now compressed to v2
The 80-N horizontal force P acts on a bell crank as shown. (a) Replace P with an equivalent force-couple system at B. (b) Find the two vertical forces at C and D that are equivalent to the couple found in part a.
consider a large vessel divided into two chambers by a dividing nwall such as that described in lecture on 23 feb. the
one kilogram of water fills a 150-l rigid container at an initial pressure of 2 mpa. the container is then cooled to 40
a 5-ft3 tank contains 0.6-gravity natural gas at 700 psia and 60of. this tank is connected to anther tank containing
If the motorcycle has a deceleration of a_t = -(0.001s);{rm m}/{rm s}^{ 2 } and its speed at position A is 18 m/s, determine the magnitude of its acceleration when it passes point B.
a refrigerant 134a at 140 kpa and -10 degree celcius is compressed by an adiabatic 16kw compressor to an exit state of
A steam power plant operates on a simple ideal Rankine cycle between the pressure limits of 3 MPa and 50 kPa. The temperature of the steam at the turbine inlet is 300 C and the mass flow rate of steam through the cycle is 35 kg/s. Show the cycle on a..
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